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Category Archives: Computer Subject

Prerequisite – How ARP works, Packet flow in the same network  To deliver the packet to the destination host, the source IP, destination IP, source… Read More
Data Replication is the process of storing data in more than one site or node. It is useful in improving the availability of data. It… Read More
Hash Function is a function that has a huge role in making a System Secure as it converts normal data given to it as an… Read More
Message Authentication Codes are the codes which plays their role in two important functions: Authentication Detection and Falsification Detection.  Where do we need these codes? Suppose… Read More
Prerequisite : Permutation and Combination n students appear in an examination, find the number of ways the result of examination can be announced. Answer is… Read More
ANN learning is robust to errors in the training data and has been successfully applied for learning real-valued, discrete-valued, and vector-valued functions containing problems such… Read More
An operating system acts as an intermediary between the user of a computer and computer hardware. The purpose of an operating system is to provide… Read More
Multitasking operating system is an operating system that gives you the perception of two or more tasks/jobs/processes running simultaneously. It does this by dividing system… Read More
SQL injection is a technique used to exploit user data through web page inputs by injecting SQL commands as statements. Basically, these statements can be… Read More
Prerequisite – ER Model A relationship between two entities of a similar entity type is called a recursive relationship. Here the same entity type participates more… Read More
Prerequisite – How ARP works? To transfer a packet from source to destination, both the MAC address and IP address of the destination should be known.… Read More
A role is created to ease setup and maintenance of the security model. It is a named group of related privileges that can be granted… Read More
Prerequisite – Dynamic Host Configuration Protocol (DHCP), How DHCP server dynamically assigns IP address to a host?  To assign an IP address to the host… Read More
A View in SQL as a logical subset of data from one or more tables. Views are used to restrict data access. A View contains… Read More
Static or Embedded SQL are SQL statements in an application that do not change at runtime and, therefore, can be hard-coded into the application. Dynamic… Read More

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